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Finding the Fourth Proportional to 355,790.51, 533,682.86 and 145,280.82

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Solution

The fourth proportional to 355,790.51, 533,682.86 and 145,280.82 is: 217,920.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,790.51 : 533,682.86 = 145,280.82 : x
  2. Step 2: Convert to fraction form
    355,790.51/533,682.86 = 145,280.82/x
  3. Step 3: Cross multiply
    355,790.51x = 533,682.86 × 145,280.82
  4. Step 4: Simplify right side
    355,790.51x = 77,533,882,794.34
  5. Step 5: Solve for x
    x = 77,533,882,794.34/355,790.51
  6. Step 6: Final answer
    x = 217,920.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.